Norton Error: “8504,101”

Norton Error: "8504,101"

Norton is known for providing unbeatable cybersecurity solution for all your connected devices. Despite the dedicated efforts of the manufacturer to guarantee smooth and hasslefree security, it may face malfunctions. Norton Error 8504 101 is one such technical glitch that causes your computer to behave in an unexpected manner. For instance, Windows can shut down, a running program may crash etc.

Norton Error: “8504,101” usually occurs with users who have the Windows OS 10, 8, 7, Vista, XP, ME, and 2000.

Norton Error:

Symptoms Of Norton Error: “8504,101”

  • An Active Program Crashes.
  • Frequent System Crashes when Running the Same Program.
  • Screen displays “An Unexpected Error Has Occured”.
  • Windows Response Time Increases and Becomes Sluggish.
  • Windows Frequently Reboot on its own.
  • System Freezes Frequently at Periodic Intervals.

Reasons For Norton Error: “8504,101”

  • Corrupted or Invalid Software for Norton is Installed on your System.
  • Incomplete Installation.
  • Windows Registry is corrupted due to Recent Norton Related Software Change.
  • Any Pre-installed Security Software from Norton or Third-Party.
  • Failure of Upgrade/ Update Process.
  • Corrupted User Access Controls For Installation/ Uninstallation of Software.
  • Presence of Virus or Malware affecting Norton Related Program Files.
  • Norton Related Files are Missing if Deleted Accidently or Maliciously by Third-Party Program.

How To Fix Norton Error: “8504,101”

Run the Norton Remove and Reinstall Tool

  1. First of all, go to the Support page of Norton’s official website.
  2. Then, locate and download the Norton Remove and Reinstall tool
  3. Subsequently, locate the downloaded file.
  4. Now, double-click the NRnR icon.
  5. Next, you should read the “License Agreement”. Then, click “Agree”.
  6. Click on “Advanced Options”.
  7. Click “Remove Only”.
  8. Thereafter, click “Remove”.
  9. Now, click on “Restart Now”.
  10. After this, follow on-screen instructions to re-install the Norton product.

Uninstall Other Third-Party Security Software

  • From the “Control Panel” 
  • Use dedicated Remove and Reinstall Tools

Download and Run The Following

  • Norton Power Eraser

  • Norton AutoFix Tool

Run A Complete Malware Scan

Open your Security Software and initiate a complete Malware Scan. This is the only way to remove any malware infection. This will eliminate all the malware-associated programs and registry entries from your computer.

Repair Registries Associated With Error 8504, 101

  1. First of all, click on the “Start” button.
  2. Now, enter “command” in the Search box.
  3. Then, press “Control + Shift + Enter”.
  4. When prompted, click “Yes”.
  5. Next, you should type “regedit” in the following window. Then, press “Enter”.
  6. Subsequently, select the key linked with “Error 8504, 10” for which you want a Backup.
  7. From the “File” menu, select “Export”.
  8. Now, select the “Location” to save the “Norton’s Backup Key” in the “Save In” list.
  9. In the “Filename” box, type in a name for the Backup file.
  10. Finally, click on “Save”.

Use Disk Cleanup and Clean up System Junk

  1. First of all, click on “Start”.
  2. Now, enter “command” in the Search box.
  3. Then, press “Control + Shift + Enter”.
  4. When prompted, click “Yes”.
  5. Next, you should type “regedit” in the following window. Then, press “Enter”.
  6. As a result, “Disk Cleanup” will calculate the space that can be freed up on each drive.
  7. Thereafter, it will prompt you to select the “Categories” from which you want to clean up “Junk Files”. Hence, chose “Temporary Files”.
  8. Subsequently, tick mark the boxes against the “Categories” that you want to clean.


  • Use Disk Cleanup and Clean up System Junk
  • Update All Drivers on your System
  • Use Windows System Restore
  • Run Windows System File Checker 
  • Install All Windows update
  • Update Graphics Card

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